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Math Help - Five Colour Map

  1. #1
    createmx
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    Five Colour Map

    Hi, can anyone help me prove that my five-colour map I created is not actually a five-colour map? I am not aloud to figure it out myself so I thought that this forum would be great place to ask someone else.
    Here it is:
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  2. #2
    Site Founder MathGuru's Avatar
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    Can you post it again? I don't see it here.

    All maps only need 4 colors so that no two regions are touching with the same color. This has been proven but I love playing around with these anyway.
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